Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887030 | Testing device for electrical circuit boards | Kenichi Niki, Tohru Kokogawa, Hayato Takasago | 1989-12-12 |
| 4822751 | Method of producing a thin film semiconductor device | Tadashi Nishimura, Yasuo Inoue | 1989-04-18 |